beliefer commented on issue #27507: [SPARK-24884][SQL] Support regexp function regexp_extract_all URL: https://github.com/apache/spark/pull/27507#issuecomment-585518801 > I have a high-level question. Do we have huge advantage to generate Java code? > > One advantage is to store the result of `Pattern.compile()` into each global variable for caching while the non-generated code shares one variable for cache. > On the other hand, the size of the result is not small. Which trade-off do we select? Space or performance? There is a discussion in https://github.com/apache/spark/pull/26875
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